white commissure a bundle of myelinated fibers, both sensor...
opium n. the dried resin of the unripe seed pods of the opi...
pinna n. (pl. pinnae) the funnel-shaped part of...
saturation scale an index of the purity of a color, ranging...
retinal light a sensation of light experienced in the absen...
Arago phenomenon the impaired sensitivity to light that exi...